PRB: Circular Dependency Error When UDT Is Not In Base Class Module (255757)


The information in this article applies to:

  • Microsoft Visual Basic Learning Edition for Windows 6.0
  • Microsoft Visual Basic Professional Edition for Windows 6.0
  • Microsoft Visual Basic Enterprise Edition for Windows 6.0
This article was previously published under Q255757

SYMPTOMS

A circular dependency compilation error can occur when a User Defined Type (UDT) is defined in a class module that implements another base class interface, and the base class module has references to the UDT.

RESOLUTION

Move the UDT definition to the base class module.

STATUS

This behavior is by design.

MORE INFORMATION

Steps to Reproduce Behavior

  1. Start a new Visual Basic ActiveX DLL project. Class1 is created by default.
  2. Add the following code to the General Declarations section of Class1:
    Public Function myFunct() As myUDT
End Function
  3. On the Project menu, select Add Class Module, and then add Class2 to the project.
  4. Add the following code to the General Declarations section of Class2:
    Public Type myUDT
    iNum As Integer
End Type

Implements Class1

Private Function Class1_myFunct() As myUDT
End Function
  5. Run the project. The following error is raised:
    Compile Error:
    Circular dependencies between modules.
  6. To correct the problem, move the definition of myUDT from Class2 to Class1 and run the project again. No error occurs.
Modification Type:MajorLast Reviewed:5/12/2003
Keywords:kbBug kbCompiler kbCtrlCreate kbInprocSvr kbprb KB255757
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